regeneratiivne leekahi terase tootmiseks toormalmist ja vanarauast
a reverberatory steel melting furnace from pig iron and scrap iron with a shallow hearth and low roof
Hea teada
In such furnaces the flame passes over the charge on the hearth, causing the charge to be heated both by direct flame and by radiation from the roof and sidewalls of the furnace. At present the open-hearth furnace has lost its importance in steelmaking.
